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<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        div {
            width: 100px;
            height: 100px;
            background-color: pink;
        }
    </style>
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            $(document).on("click", function() {
                console.log("点击了document");
            })
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                //console.log(event);
                console.log("点击了div");
                event.stopPropagation(); //阻止冒泡
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<body>
    <div></div>
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